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Address: Suzhou City, Jiangsu Province, China, 215000
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Tel: 0086-512-68235075
R166681320 Original Rexroth Linear Bearing Block
BALL RUNNER BLOCK CARBON STEEL KWD-020-SKS-C1-H-1
- Size 20
- Format SKS: Width = slimline, length = short, height = standard
- Runner block body made of unalloyed steel CS
- Preload class C1: Low preload
- Accuracy class H: High
- Without ball chain
- With initial lubrication and preservation
- Roller bearing grease Dynalub 510
- Without attachment element, left (front reference edge)
- Without attachment element, right (front reference edge)
- Straight lube connection loosely attached.
- Runner block body in standard version
- Overall length of the runner block = 57.3 mm
- Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
R166681320 Original Rexroth Linear Bearing Block Specifications
| Parameter | Value | Engineering Explanation |
|---|---|---|
| Nominal Size | 20 mm (0.79 inches) | Defines the standardized size for compatibility with matching guide rails. |
| Width of Runner Block | 44 mm (1.73 inches) | Determines the block’s lateral dimension, critical for fitting in compact setups. |
| Length of Runner Block | 57.3 mm (2.26 inches) | Short length optimizes space in longitudinal direction. |
| Height of Runner Block with Guide Rail | 30 mm (1.18 inches) | Total height including rail, ensuring proper alignment in assemblies. |
| Dynamic Load Capacity C100 | 15,400 N | Maximum load the block can handle during motion for 100,000 m travel (per DIN ISO 14728-1). |
| Static Load Capacity C0 | 16,500 N | Maximum stationary load the block can withstand without deformation. |
| Dynamic Torsional Moment Load Capacity Mt100 | 200 Nm | Resistance to twisting forces during dynamic operation (100,000 m travel). |
| Static Torsional Moment Load Capacity Mt0 | 210 Nm | Resistance to twisting forces when stationary. |
| Dynamic Longitudinal Moment Load Capacity ML100 | 83 Nm | Capacity to handle longitudinal tilting forces during motion (100,000 m travel). |
| Static Longitudinal Moment Load Capacity ML0 | 89 Nm | Capacity to resist longitudinal tilting when stationary. |
| Maximum Acceleration amax | 500 m/s² (if Fcomb ≤ 2.8 • Fpr; otherwise 50 m/s²) | Maximum acceleration the block can achieve without compromising performance. |
| Maximum Permissible Linear Speed vmax | 5 m/s | Top speed for reliable operation in high-speed applications. |
| Friction Coefficient μ | 0.002–0.003 | Low friction ensures smooth motion and energy efficiency. |
| Permissible Ambient Temperature | -10 °C to +80 °C (14 °F to 176 °F); 100 °C (212 °F) for short periods | Operating temperature range; consult for sub-zero conditions. |
| Weight | 0.25 kg (0.55 lbs) | Lightweight design reduces system inertia. |
| Material | Carbon Steel | High-strength material ensures durability and load-bearing capacity. |
| Seal Type | SS – Standard Seal | Protects against dust and debris, extending service life. |
| Lubrication | Initial lubrication with Dynalub 510 grease; relubrication via nipple | Reduces maintenance frequency and enhances operational efficiency. |
Technical Attributes
| Version | Ball rail system |
| Nominal size [mm] | 20 |
| Format | SKS – slimline, short, standard height |
| Model | High-precision ball runner block |
| Material | Carbon steel |
| Preload class | C1 – Low preload |
| Accuracy class | H – Highly accurate |
| Seal | SS – Standard seal |
| Ball chain | Without ball chain (standard) |
| Self-aligning for compensation of misalignments | Without self-alignment |
| Width of runner block [mm] | 44 |
| Length of runner block [mm] | 57.3 |
| Height of runner block [mm] | 25.35 |
| Height runner block with guide rail [mm] | 30 |
| Lubrication | With initial lubrication and preservation |
| Dynamic load capacity C100 [N] | 15400 |
| Note: dynamic load capacity C100 | Dynamic load capacities and load moments are based on a stroke travel of 100,000 m according to DIN ISO 14728-1. |
| Maximum acceleration rate amax [m/s²] | 500 |
| Note: Max. acceleration amax | If Fcomb◡> 2.8 • Fpr : amax = 50 m/s2 |
| Maximum permissible linear speed vmax [m/s] | 5 |
| Permissible ambient temperature (min. … max.) | -10 °C … +80 °C |
| Note: permissible ambient temperature (min. … max.) | 100 °C admissible for short time. For operation at negative temperatures, please consult us. |
| Friction coefficient μ | 0.002 … 0.003 |
| Note: friction coefficient μ | Without friction of seal |
| Weight [kg] | 0.25 |
| Dynamic load capacity C50 [N] | 19400 |
| Note: dynamic load capacity C50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Static load capacity C0 [N] | 16500 |
| Dynamic torsional moment load capacity Mt50 [Nm] | 250 |
| Note: Dynamic torsional moment load capacity Mt50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Dynamic torsional moment load capacity Mt100 [Nm] | 200 |
| Note: Dynamic torsional moment load capacity Mt100 | Dynamic load capacities and load moments are based on a stroke travel of 100,000 m according to DIN ISO 14728-1. |
| Static torsional moment load capacity Mt0 [Nm] | 210 |
| Dynamic longitudinal moment load capacity ML50 [Nm] | 110 |
| Note: Dynamic longitudinal moment load capacity ML50 | Dynamic load capacity and load moments based on a travel of 50,000 m. |
| Dynamic longitudinal moment load capacity ML100 [Nm] | 83 |
| Note: Dynamic longitudinal moment load capacity ML100 | Dynamic load capacities and load moments are based on a stroke travel of 100,000 m according to DIN ISO 14728-1. |
| Static longitudinal moment load capacity ML0 [Nm] | 89 |
| Pitch T guide rail [mm] | 60 |
| Dimension A (profiled rail systems) [mm] | 44 |
| Dimension A1 (profiled rail systems) [mm] | 22 |
| Dimension A2 (profiled rail systems) [mm] | 20 |
| Dimension A3 (profiled rail systems) [mm] | 12 |
| Dimension B (profiled rail systems) [mm] | 57.3 |
| Dimension B tolerance (profiled rail systems) [mm] | +0.5 |
| Dimension B1 [mm] | 31.9 |
| Dimension E1 [mm] | 32 |
| Dimension E8 (profiled rail systems) [mm] | 32.5 |
| Dimension E9 (profiled rail systems) [mm] | 7.3 |
| Dimension H [mm] | 30 |
| Dimension H1 (profiled rail systems) [mm] | 25.35 |
| Dimension H2 with cover strip (profiled rail systems) [mm] | 20.75 |
| Dimension H2 without cover strip (profiled rail systems) [mm] | 20.55 |
| Dimension K1 (profiled rail systems) [mm] | 22.95 |
| Dimension K2 (profiled rail systems) [mm] | 22.95 |
| Dimension K3 (profiled rail systems) [mm] | 3.35 |
| Dimension K4 (profiled rail systems) [mm] | 3.35 |
| Dimension N3 (profiled rail systems) [mm] | 7.5 |
| Dimension N6 (profiled rail systems) [mm] | 13.2 |
| Dimension N6 tolerance (profiled rail systems) [mm] | ±0.5 |
| Dimension S2 (profiled rail systems) | M5 |
| Dimension S5 (profiled rail system) [mm] | 6 |
| Dimension S9 | M3x5 mm |
| Dimension S9 thread diameter (profiled rail systems) | M3 |
| Dimension S9 lead [mm] | 5 |
| Dimension T1 min [mm] | 13 |
| Dimension V1 [mm] | 6 |
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